A plain-language explanation
Keyword density is the percentage of the selected word or phrase in the entire content of the page.
Where it helps in practice
Keyword density is a simple ratio that cannot judge answer quality or natural language.
The decision before implementation
Avoid a target percentage; cover the subject properly, use precise terminology and edit for a defined reader.
How to verify the result
Read the copy aloud and review repetition, question coverage and post-publication user behaviour.
